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Abstract #2465

An adaptive phase recovery method for 4D phase-contrast MRI

Rizwan Ahmad 1 , Ning Jin 2 , Yu Ding 3 , and Orlando P Simonetti 3

1 Electrical Engineering, The Ohio State University, Columbus, OH, United States, 2 Siemens Healthcare, Columbus, OH, United States, 3 Internal Medicine, The Ohio State University, Columbus, OH, United States

The purpose of this work is to develop a new approach to deriving blood velocity estimates from phase-contrast MRI data. Different directional components of velocity may have different temporal frequency contents. Traditional linear methods treat all velocity components equally, i.e., they assign equal bandwidth to each component even when the true frequency contents of the components are widely different. To overcome this limitation, we propose an adaptive formulation, where the bandwidth of each velocity component is adapted based on a current estimate of its temporal frequency contents, leading to improved temporal resolution and reduced artifacts.

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